package com.regentsoft.cloudback.util;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.util.StringUtils;
import com.alibaba.fastjson.JSON;


/**
 * 
 * @author czd
 *
 * @date 2017年12月11日
 *
 * @version 1.0
 */
public class HttpClientUtil {
	public static String URL = "http://192.168.9.202:8080";
	/** 
	 * 将map转换成url 
	 * @param map 
	 * @return 
	 */  
	public static String getUrlParamsByMap(Map<String, Object> map) {  
	    if (map == null) {  
	        return "";  
	    }  
	    StringBuffer sb = new StringBuffer();  
	    for (Map.Entry<String, Object> entry : map.entrySet()) {  
	        sb.append(entry.getKey() + "=" + entry.getValue());  
	        sb.append("&");  
	    }  
	    String s = sb.toString();  
	    if (s.endsWith("&")) {  
	        s = org.apache.commons.lang.StringUtils.substringBeforeLast(s, "&");  
	    }  
	    return s;  
	}  
	
	
	public static String requestPost(String strUrl, String param) {
		String returnStr = null; // 返回结果定义
		URL url = null;
		HttpURLConnection httpsURLConnection = null;
		
		try {
			url = new URL(strUrl);
			httpsURLConnection = (HttpURLConnection) url.openConnection();
			httpsURLConnection.setRequestProperty("Accept-Charset", "utf-8");
			httpsURLConnection.setRequestProperty("Content-Type", "application/json; charset=utf-8");
			httpsURLConnection.setDoOutput(true);
			httpsURLConnection.setDoInput(true);
			httpsURLConnection.setRequestMethod("POST"); // post方式
			httpsURLConnection.connect();

			//POST方法时使用
			byte[] byteParam = param.getBytes("UTF-8");		//得到utf-8编码的字节组
			DataOutputStream out = new DataOutputStream(httpsURLConnection.getOutputStream());
			out.write(byteParam);
			out.flush();
			out.close();
			BufferedReader reader = new BufferedReader(
					new InputStreamReader(httpsURLConnection.getInputStream(), "utf-8"));
			StringBuffer buffer = new StringBuffer();
			String line = "";
			while ((line = reader.readLine()) != null) {
				buffer.append(line);
			}

			reader.close();
			returnStr = buffer.toString();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		} finally {
			if (httpsURLConnection != null) {
				httpsURLConnection.disconnect();
			}
		}
		return returnStr;
	}

	
	
	 
	/**
	 * 将url参数转换成map
	 * 
	 * @param param
	 *            aa=11&bb=22&cc=33
	 * @return
	 */
	public static Map<String, Object> getUrlParams(String param) {
		Map<String, Object> map = new HashMap<String, Object>(0);
		if (StringUtils.isEmpty(param)) {
			return map;
		}
		String[] params = param.split("&");
		for (int i = 0; i < params.length; i++) {
			String[] p = params[i].split("=");
			if (p.length == 2) {
				map.put(p[0], p[1]);
			}
		}
		return map;
	}  
	
	 public static Map<String, Object> toMap(String jsonString){
		 Map<String,Object> resultMap = new HashMap<>();
		 Map<String,Object> mapTypes = JSON.parseObject(jsonString);  
	        for (Object obj : mapTypes.keySet()){  
	        	resultMap.put((String) obj, mapTypes.get(obj));
	        }
		return resultMap;

	    }
	public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！"+e);
            e.printStackTrace();
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            }
            catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }    


	/**
     * 向指定URL发送GET方法的请求
     * 
     * @param url
     *            发送请求的URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent",
                    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }
    
    public static void main(String[] args) {
		String url = PropertyUtil.getProperty("SYSTEM_SC");
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("code", "1234567777");
		map.put("appCode", "1234567777");
		String params = getUrlParamsByMap(map);
		String result = sendPost(url, params);
		if(StringUtils.isEmpty(result)) {
			System.out.println("失败");
			return ;
		}
		Map<String,Object> resultMap = toMap(result);
		if(resultMap!=null) {
			String code = (String) resultMap.get("code");
			if(code.equals("0")) {
				System.out.println("成功");
			}else {
				System.out.println("失败");
			}
			
		}else {
			System.out.println("失败");
		}
	}
}
